US Bridges

SR 79B over Florence Canal

Good

Pinal County, Arizona · 0.3 MI S JCT SR 287 · Structure no. 00132

Built
1935
90 years old, rebuilt 1961
Condition
Good
inspected February 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
8,459
2023 count
Owner
State
State Highway Agency

About this bridge

SR 79B over Florence Canal is a concrete slab carrying SR 79B over Florence Canal in Pinal County, Arizona. It was built in 1935 and reconstructed in 1961, so it is 90 years old, older than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,459 vehicles a day, roughly 9% of them trucks, projected to reach 8,469 by 2042. The structure is 23 ft (7 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 79B
CrossesFlorence Canal
Location0.3 MI S JCT SR 287
RouteState Highway 79
CountyPinal County
StateArizona
Coordinates33.0191, -111.3872
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length23 ft (7 m)
Longest span22 ft (6.7 m)
Deck width51 ft (15.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,459 (2023)
Projected traffic8,469 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 79B over Florence Canal built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1961.

What condition is SR 79B over Florence Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2024.

How much traffic does SR 79B over Florence Canal carry?

About 8,459 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 79B over Florence Canal?

The structure is 23 ft (7 m) long with a longest span of 22 ft (6.7 m) and a deck 51 ft wide.

Who owns SR 79B over Florence Canal?

It is owned by the State Highway Agency.